title: Blockwise approach to fragments of the O-specific polysaccharide of Shigella flexneri serotype 2a: convergent Synthesis of a decasaccharide representative of a dimer of the branched repeating unit.
mesh_terms: D015394:Molecular Structure; D019081:O Antigens / Q000737:chemistry* / Q000276:immunology; D009844:Oligosaccharides / Q000138:chemical synthesis* / Q000737:chemistry / Q000276:immunology; D012703:Serotyping; D012763:Shigella flexneri / Q000737:chemistry / Q000235:genetics / Q000276:immunology*
chemical_list: D019081:O Antigens; D009844:Oligosaccharides